while true
    do
    #echo {1..10}|xargs -n1 -P3 python fetch.py -f4,5,231,58,64,68,186,230,253,249,419,229 -p &
    echo {1..20}|xargs -n1 -P3 python fetch.py -f4,5,6,58,230,231,143,229,27,77,345 -p &

echo `date +"%Y-%m-%d %H:%M:%S"`
    sleep 43200
done
